US5721671A - Subrack for electronic circuit boards and its support - Google Patents

Subrack for electronic circuit boards and its support Download PDF

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Publication number
US5721671A
US5721671A US08/547,134 US54713495A US5721671A US 5721671 A US5721671 A US 5721671A US 54713495 A US54713495 A US 54713495A US 5721671 A US5721671 A US 5721671A
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US
United States
Prior art keywords
subrack
mother
boards
mother board
connectors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/547,134
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English (en)
Inventor
Christian Ruque
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transport SA
Original Assignee
GEC Alsthom Transport SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom Transport SA filed Critical GEC Alsthom Transport SA
Assigned to GEC ALSTHOM TRANSPORT SA reassignment GEC ALSTHOM TRANSPORT SA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RUQUE, CHRISTIAN
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Publication of US5721671A publication Critical patent/US5721671A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/18—Construction of rack or frame
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1439—Back panel mother boards
    • H05K7/1444—Complex or three-dimensional-arrangements; Stepped or dual mother boards
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1452—Mounting of connectors; Switching; Reinforcing of back panels
    • H05K7/1454—Alignment mechanisms; Drawout cases
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits

Definitions

  • the present invention concerns electronic circuit board support assemblies in general and in particular a subrack for electronic circuit boards that plugs in and unplugs automatically and its support.
  • the electronic circuit boards are disposed perpendicularly to the front face of the subrack.
  • These electronic circuit boards have backplane connectors at their rear ends.
  • a rigid clearance allowing fitting of the electronic circuit boards to the connectors is provided by slideways on the board.
  • Output connectors are fixed to the subrack structure, facing the backplane connectors.
  • the output connectors are male connectors provided with centering pegs and are mounted to float on the subrack structure by means of spacers with play.
  • the output connectors are distributed on the rear face of the subrack.
  • the “Eurofer” subrack can be manipulated by means of two handles on its front face and also has two guide slideways on its sides.
  • wired connections of the subrack extend away from the female output connectors disposed on the case structure.
  • the connectors are centered automatically by the centering pegs and the spacers.
  • the subrack is fixed to its structure by means of four or eight screws at the front of the subrack.
  • a substantial depth of the subrack is plugged into the wiring of the case because of the large volume of the connectors, the substantial depth of the subrack because of the two stages of floating connectors, an intermediate wiring area and a circuit board installation area are required and because of the disposition of the output connectors and the disposition of the output wiring,
  • the subrack is difficult to mount because it is heavy and deep, because of the position of its center of gravity and because of its disposition in that, to slide the subrack in, it is necessary to stand in front of it, in which position the slideways cannot be seen,
  • the subrack is unplugged manually by pulling with sufficient force on two handles provided at the front of the subrack, this force being increased by virtue of the increased number of output connectors,
  • one object of the invention is a subrack for electronic circuit boards that plugs in and unplugs automatically and that is free of the disadvantages of the prior art support assemblies.
  • the application has designed a subrack for electronic circuit boards that plugs in and unplugs automatically and which shortens the installation time and eliminates the problems of connection, reliability, wiring and access to external connections.
  • the invention consists in a subrack for electronic circuit boards adapted to be inserted into a support for the subrack, said electronic circuit boards being connected to mother boards, said mother boards being disposed in at least two planes, characterized in that said subrack plugs in and unplugs automatically and in that said mother boards are parallel to the front face of said subrack.
  • the subrack and its subrack support also have at least one of the following features:
  • said subrack support has a general interior shape similar to the general exterior envelope of said subrack
  • output connectors are fixed to said support of the subrack, connectors of said subrack being adapted to connect automatically to said output connectors.
  • the subrack of the invention has at least one of the following features:
  • each plane contains one or more mother boards, said mother boards and their electronic circuit boards being superposed to form a stack of compartments the general exterior envelope of which is generally pyramid shaped,
  • the front face of the subrack faces the mother board or the set of coplanar mother boards having the largest surface area
  • the compartments of the subrack include stiffener plates for the mother boards and/or protective plates for the electronic circuit boards,
  • At least one mother board of a compartment n is omitted to allow provision of four rows of connectors on the mother board of the next compartment n+1,
  • At least one mother board of a compartment n is offset to align it with one side of the previous compartment n-1 or the next compartment n+1 so that the connectors of said mother board of said compartment n can be disposed on one side of the subrack,
  • the compartments are all aligned with one side of the subrack so that all of the connectors can be on one side of the subrack,
  • At least one compartment contains only one mother board
  • At least one compartment contains two mother half-boards
  • At least one compartment contains four mother quarter-boards
  • At least one compartment contains one mother half-board and two mother quarter-boards
  • the areas of the mother board and the sets of coplanar mother boards have increasing values according to their position in said pyramid shaped stack, the mother board or the set of mother boards nearest the front face of the subrack having the greatest area,
  • the mother boards are disposed in planes parallel to the front face of the subrack by means of spacers fastened to said stiffener plates of the mother boards and/or said protective plates of the daughter electronic circuit boards.
  • the volume and in particular the depth of the subrack and its support are greatly reduced because of the use and the positioning of the mother boards substituted for the standardized boards of the prior art, the elimination of the wiring of the backplane with its two rows of connectors, and the relocation of the output wiring area from the rear of the subrack to the sides; all these advantages facilitate installation in the case,
  • the volume and the depth of the subrack are exactly matched to the intended function; by juxtaposing levels, the subrack best suited to the intended function is produced, with one, two or three compartments, which is impossible with the prior art devices,
  • FIG. 1 is a part-sectional top view of a three-stage subrack for electronic circuit boards that plugs in and unplugs automatically and its case, both in accordance with one preferred embodiment of the invention.
  • FIG. 2 is a part-sectional top view of the preferred embodiment of the subrack and its case with the subrack inserted into the case.
  • FIG. 3 is a view in section on the line III--III in FIG. 2, the output connectors of the subrack being shown connected.
  • FIG. 4 is a view in section on the line III--III in FIG. 2, the output connectors of the subrack being shown disconnected.
  • FIG. 5 is a part-sectional top view of the preferred embodiment of a subrack for electronic circuit boards showing one particular arrangement whereby four rows of connectors can be disposed on the mother board of the second compartment.
  • FIG. 6 is a part-sectional top view of the preferred embodiment of the subrack for electronic circuit boards showing one particular arrangement enabling the connectors to be disposed at one side of the subrack.
  • FIGS. 7 and 8 are part-sectional top views of the first embodiment of subrack for electronic circuit boards showing two other particular arrangements.
  • FIGS. 9A through 9F are diagrammatic representations of different combinations of mother boards in each compartment.
  • a subrack 1 for electronic circuit boards 2 adapted to be mounted in a support 11 for the subrack 1, the electronic circuit boards 2 are connected to mother boards 3A-3C disposed in at least two planes.
  • the subrack plugs in and unplugs automatically and the mother boards 3A-3C are parallel to the front face 6 of the subrack 1.
  • the general interior shape of the subrack support is similar to the general exterior envelope of said subrack 1.
  • Output connectors 4A-4C are preferably fixed to the support 11 of the subrack 1, connectors 5A-5C on the subrack 1 being adapted to connect automatically to said output connectors 4A-4C.
  • FIGS. 1 and 2 are two part-sectional top views of a preferred embodiment of a three-stage subrack for electronic circuit boards that plugs in and unplugs automatically and its case, both in accordance with the invention.
  • the subrack 1 for electronic circuit boards 2A-2C includes daughter electronic circuit boards 2A-2C connected to mother boards 3A-3C.
  • the electronic circuit boards 2A-2C are connected to the mother boards by means of board connectors 21A-21C.
  • the mother boards 3A-3C are disposed in at least two planes parallel to the front face 6 of the subrack 1, each plane containing one or more mother boards.
  • the planes are superposed to form a stack in the shape of a pyramid.
  • the front face 6 of the subrack 1 faces the largest surface area mother board or set of coplanar mother boards.
  • the subrack 1 for electronic circuit boards 2A-2C therefore includes large mother boards 3A-3C to the shorter sides of which male output connectors 5A-5C are fixed.
  • the male output connectors 5A-5C can be connected automatically to the female connectors 4A-4C.
  • the female output connectors 4A-4C terminate the output wiring 10A-10C.
  • Each design of mother board has one or more male output connectors 5A-5C.
  • the set of mother boards is disposed parallel to the plane of the front face 6 of the subrack 1 to form a stack of mother board compartments A-C.
  • the mother boards have different widths depending on their compartment.
  • the set of mother boards is disposed and held to form a stack in the shape of a pyramid.
  • stack in the shape of a pyramid is meant a stack of mother boards such that the imaginary exterior envelope defined by the set of mother boards comprises a set of steps along the longitudinal axis and/or along the radial axis to form a podium along one or both axes.
  • the front face 6 of the subrack 1 faces the larger surface area mother board or set of coplanar mother boards.
  • spacers 7A-7C are preferably attached to plates which act as stiffener plates 8B-8D for the mother boards 3A-3C and/or protective plates 8A-8C for the daughter electronic circuit boards 2A-2C.
  • the electronic circuit board subrack also has holding means 12 attached to the front face 6 of the subrack 1.
  • These holding means 12 are handles or openings respectively fixed to or formed in the front face 6 of the subrack 1, for example.
  • the subrack for electronic circuit boards includes a support 11 for the subrack 1 to facilitate mounting it in a case 9. Mounting the subrack 1 in the case 9 is all the easier in that the subrack is shallow and therefore has a center of gravity near the front face.
  • the subrack for electronic circuit boards that plugs in and unplugs automatically can be inserted into the support 11 by means of slideways 13 attached to the bottom face of the support 11 and extending from the front of the support to the rear of the support.
  • the support 11 for the subrack 1 has the following functions:
  • the support 11 for the subrack 1 forms a podium the general interior shape of which is similar to the general exterior envelope of the mother boards 3A-3C stacked in accordance with the invention.
  • FIGS. 3 and 4 are two views in section on the line III-III in FIG. 2 in which the output connectors 4A, 5A of the subrack are respectively connected and disconnected.
  • FIGS. 3 and 4 show the subrack 1 and the electronic circuit boards 2B, 2C respectively associated with the second and third compartments B and C, the electronic circuit board 2B being connected to the mother board 3B by means of board connectors 21B.
  • FIGS. 3 and 4 also show the stiffener plates 8B, 8C respectively associated with the second and third compartments B and C and the spacer 7B associated with the second compartment B.
  • the output connectors 4A-4C are fixed to the support 11 of the subrack 1 by fixing means comprising screws 16 and spacers 17 that provide a floating mount.
  • the floating mount is obtained by means of a play 18 a few tenths of a millimeter deep and approximately 2 mm transversely to the fixing axes, for example.
  • the electronic circuit board subrack also includes two centering pegs 14 associated with each fixing means for the output connectors 4A-4C.
  • These pegs preferably have a bevel 15.
  • the pegs 14 are fixed to the associated mother boards 3A-3C by appropriate means 19 for fixing the male output connectors 5A-5C to the associated mother board 3A-3C.
  • the coupling of the male output connectors is achieved by penetration of the two pegs into spot facings 20 on the female output connectors (e.g. 4A).
  • the female output connectors 4A-4C are disposed on each side of the support 11 for the subrack 1 and are offset in each compartment so that they are not coplanar.
  • the integration of the case wiring 10A-10C does not project to either side of the surface area corresponding to the front face 6 of the subrack 1, which minimizes the overall depth of the wiring and enables it to be disposed near the front face of the subrack, facilitating modification of the wiring.
  • the female connectors 4A-4C must be detached and moved far enough forward to obtain access to the wiring 10A-10C.
  • the feature of the invention that provides a subrack support in the form of a podium has the advantages of providing an effective screen against electromagnetic interference around the subrack because of the presence of solid walls and because of the openings 22 in the upper, lower and bottom parts.
  • the openings 22 also enable removal of heat.
  • the openings can be provided either by making holes directly in the top and bottom walls of the subrack support or by attaching perforated plates.
  • the openings enable distribution terminals (not shown) for the wiring 10A-10C and retaining means for the case wiring and clamps (not shown) for screened cables, to be mounted on the step faces of the support 11 for the subrack 1 in the form of a podium.
  • FIG. 5 is a part-sectional top view of the subrack 1 for electronic circuit boards 2A-2C showing one particular arrangement of the first compartment A and the mother board 3B in the second compartment.
  • the fixing spacers 7B of the second compartment B are omitted, leaving only the spacers 7A and 7C of the first and third compartments.
  • stiffener/protection plate 8C and stiffener plate 8D for the mother boards 3B, 3C and stiffener/protection plate and the protective plate 8A-8C for the electronic circuit boards 2B and 2C, respectively.
  • FIG. 6 is a part-sectional top view of the electronic circuit board subrack 1 showing an arrangement of the first compartment A and the second compartment B allowing all of the connectors 4A, 5A on the mother board 3A in the first compartment A to be disposed on one side of the subrack 1, to be more precise on one side of the mother board 3A of the first compartment A.
  • An arrangement of this kind enables the connectors to be placed at one end of one of the mother boards.
  • compartments A and B it is equally possible to align more than one compartment, for example the compartments A and B, with another compartment, for example the compartment C, to arrange the compartments in a different way.
  • FIG. 7 One such embodiment is shown in FIG. 7.
  • An arrangement of this kind allows all of the connectors to be disposed at one side of the subrack.
  • the support 11 for the subrack 1 is still of generally pyramid shape.
  • a large number of different combinations of mother boards can be selected and associated in each compartment.
  • the arrangement of the mother boards in a generally pyramid shape is obtained by selecting mother boards from the following list:
  • the areas of the mother boards and the sets of coplanar mother boards 3A-3C have increasing values according to their position in the pyramid shape stack.
  • the mother board or the set of mother boards nearest the front face of the subrack has the largest area.
  • the output connectors are wave-soldered to the mother boards, for example.
  • the subrack is fixed to its case by means of a plurality of screws.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Combinations Of Printed Boards (AREA)
  • Credit Cards Or The Like (AREA)
  • Packaging For Recording Disks (AREA)
  • Plural Heterocyclic Compounds (AREA)
US08/547,134 1994-10-27 1995-10-24 Subrack for electronic circuit boards and its support Expired - Fee Related US5721671A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412881 1994-10-27
FR9412881A FR2726428B1 (fr) 1994-10-27 1994-10-27 Tiroir pour cartes electroniques a embrochement et debrochage automatiques et tiroir et son support

Publications (1)

Publication Number Publication Date
US5721671A true US5721671A (en) 1998-02-24

Family

ID=9468282

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/547,134 Expired - Fee Related US5721671A (en) 1994-10-27 1995-10-24 Subrack for electronic circuit boards and its support

Country Status (13)

Country Link
US (1) US5721671A (fr)
EP (1) EP0710066B1 (fr)
JP (1) JPH08213778A (fr)
KR (1) KR960016666A (fr)
CN (1) CN1058834C (fr)
AT (1) ATE172074T1 (fr)
AU (1) AU700496B2 (fr)
CA (1) CA2161483A1 (fr)
DE (1) DE69505223T2 (fr)
DK (1) DK0710066T3 (fr)
ES (1) ES2124509T3 (fr)
FR (1) FR2726428B1 (fr)
MX (1) MX9504388A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6229699B1 (en) * 1998-10-19 2001-05-08 International Business Machines Corporation Packaging apparatus and method for networks computer chassis
US6254437B1 (en) 1999-02-02 2001-07-03 Thomas & Betts International Utility metering transocket
US6280202B1 (en) 1999-09-01 2001-08-28 Thomas & Betts International, Inc. Board-to-board alignment and securement device
US6542373B1 (en) * 1997-11-04 2003-04-01 Seiko Epson Corporation Memory module device formation and mounting methods thereof
US20050051903A1 (en) * 2003-09-05 2005-03-10 Mark Ellsberry Stackable electronic assembly
DE102011054818A1 (de) * 2011-10-26 2013-05-02 Hella Kgaa Hueck & Co. Elektronische Schaltung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6482701B2 (ja) * 2018-03-19 2019-03-13 三菱電機株式会社 コントローラ

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE26837E (en) * 1963-08-16 1970-03-24 Electrical connecting system and parts
US3602774A (en) * 1970-05-05 1971-08-31 Aerotronic Associates Inc Method and apparatus for supporting a plurality of printed circuit boards for life test and burn-in
US4488354A (en) * 1981-11-16 1984-12-18 Ncr Corporation Method for simulating and testing an integrated circuit chip
EP0213205A1 (fr) * 1984-12-28 1987-03-11 Micro Co., Ltd. Procede d'empilage de cartes de circuits imprimes
DE8910752U1 (de) * 1989-09-07 1989-11-02 Siemens AG, 1000 Berlin und 8000 München Daten-Testgerät
US5040992A (en) * 1988-12-06 1991-08-20 Hitachi, Ltd. Mounting structure for electronic device
DE4133170A1 (de) * 1991-10-07 1993-04-08 Abb Patent Gmbh Einbaugeraet mit einem fronttraeger
US5259784A (en) * 1991-06-10 1993-11-09 Nec Corporation Printed circuit board assembly of vertical and horizontal printed boards

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE26837E (en) * 1963-08-16 1970-03-24 Electrical connecting system and parts
US3602774A (en) * 1970-05-05 1971-08-31 Aerotronic Associates Inc Method and apparatus for supporting a plurality of printed circuit boards for life test and burn-in
US4488354A (en) * 1981-11-16 1984-12-18 Ncr Corporation Method for simulating and testing an integrated circuit chip
EP0213205A1 (fr) * 1984-12-28 1987-03-11 Micro Co., Ltd. Procede d'empilage de cartes de circuits imprimes
US5040992A (en) * 1988-12-06 1991-08-20 Hitachi, Ltd. Mounting structure for electronic device
DE8910752U1 (de) * 1989-09-07 1989-11-02 Siemens AG, 1000 Berlin und 8000 München Daten-Testgerät
US5259784A (en) * 1991-06-10 1993-11-09 Nec Corporation Printed circuit board assembly of vertical and horizontal printed boards
DE4133170A1 (de) * 1991-10-07 1993-04-08 Abb Patent Gmbh Einbaugeraet mit einem fronttraeger

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6542373B1 (en) * 1997-11-04 2003-04-01 Seiko Epson Corporation Memory module device formation and mounting methods thereof
US6229699B1 (en) * 1998-10-19 2001-05-08 International Business Machines Corporation Packaging apparatus and method for networks computer chassis
US6254437B1 (en) 1999-02-02 2001-07-03 Thomas & Betts International Utility metering transocket
US6280202B1 (en) 1999-09-01 2001-08-28 Thomas & Betts International, Inc. Board-to-board alignment and securement device
US20050051903A1 (en) * 2003-09-05 2005-03-10 Mark Ellsberry Stackable electronic assembly
US7180165B2 (en) 2003-09-05 2007-02-20 Sanmina, Sci Corporation Stackable electronic assembly
USRE42363E1 (en) 2003-09-05 2011-05-17 Sanmina-Sci Corporation Stackable electronic assembly
DE102011054818A1 (de) * 2011-10-26 2013-05-02 Hella Kgaa Hueck & Co. Elektronische Schaltung
US9655256B2 (en) 2011-10-26 2017-05-16 Hella Kgaa Hueck & Co. Electronic circuit boards fastened at a frame

Also Published As

Publication number Publication date
CN1133548A (zh) 1996-10-16
MX9504388A (es) 1997-03-29
ATE172074T1 (de) 1998-10-15
DE69505223T2 (de) 1999-04-01
DE69505223D1 (de) 1998-11-12
KR960016666A (ko) 1996-05-22
AU3444595A (en) 1996-05-09
CN1058834C (zh) 2000-11-22
EP0710066A1 (fr) 1996-05-01
FR2726428B1 (fr) 1997-01-10
CA2161483A1 (fr) 1996-04-28
AU700496B2 (en) 1999-01-07
JPH08213778A (ja) 1996-08-20
FR2726428A1 (fr) 1996-05-03
ES2124509T3 (es) 1999-02-01
EP0710066B1 (fr) 1998-10-07
DK0710066T3 (da) 1999-06-21

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Owner name: GEC ALSTHOM TRANSPORT SA, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RUQUE, CHRISTIAN;REEL/FRAME:007724/0503

Effective date: 19951020

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Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

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Effective date: 20020224